KSC-02PD-0447 (04/08/2002) --- KENNEDY SPACE CENTER, FLA. - Showing their eagerness for launch, the STS-110 crew wave as they stride out of the Operations and Checkout Building. Leading the way in the front row are Pilot Stephen N. Frick (left) and Commander Michael J. Bloomfield (right); in the second row are Mission Specialists Rex J. Walheim and Ellen Ochoa; third row, Jerry L. Ross and Lee M.E. Morin; in the rear is Mission Specialist Steven L. Smith. STS-110 is the 13th assembly flight to the International Space Station, carrying the S0 Integrated Truss Structure and Mobile Transporter (MT). On the 11-day mission, the mission features four spacewalks to attach the S0 truss, which will become the backbone of the Space Station, to the U.S. Destiny Laboratory. The MT, a space "railcar," is attached to the truss segment and will make its debut run during the flight.